3x + y = 19 , and x + 3y = 1.
find the value of 2x + 2y
can anyone explain this one for me?

The value of 2x + 2y = 10

One variable linear equation is an equation that has a variable and the exponent number is one.

Can be stated in the form:

or

ax + b = c, where a, b, and c are constants, x is a variable

Whereas the two-variable linear equation is a linear equation that has 2 variables and the exponent is one

Can be stated in the form:

x, y = variable

3x + y = 19, and x + 3y = 1

The two equations above are equation 2 variables

Can be solved by elimination and substitution

3x + y = 19 x1 ---> 3x + y = 19

 x + 3y = 1 x3 ----> 3x + 9y = 3

                                 ---------------- -

                                       -8y = 16

                                          y = -2

x + 3 (-2) = 1

x -6 = 1

x = 7

We input both x and y values to solve the equation:

2x + 2y

2 (7) +2 (-2)

= 14-4

= 10

the slope-intercept form of the linear equation

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a graph of a linear equation

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system of linear equations

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1/4 because there is 4 grades.

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0